21300001193 has 4 divisors (see below), whose sum is σ = 21337435860. Its totient is φ = 21262566528.

The previous prime is 21300001187. The next prime is 21300001211. The reversal of 21300001193 is 39110000312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7462713769 + 13837287424 = 86387^2 + 117632^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21300001193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21300001123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18716480 + ... + 18717617.

It is an arithmetic number, because the mean of its divisors is an integer number (5334358965).

Almost surely, 2^21300001193 is an apocalyptic number.

It is an amenable number.

21300001193 is a deficient number, since it is larger than the sum of its proper divisors (37434667).

21300001193 is an equidigital number, since it uses as much as digits as its factorization.

21300001193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37434666.

The product of its (nonzero) digits is 162, while the sum is 20.

The spelling of 21300001193 in words is "twenty-one billion, three hundred million, one thousand, one hundred ninety-three".